Schmidt SS 20.515 Instructions For Use Manual Download | Manualshive

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SCHMIDT

®

Flow Sensor

SS 20.515

Instructions for Use

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Summary of Contents for SS 20.515

Page 1: ...SCHMIDT Flow Sensor SS 20 515 Instructions for Use ...

Page 2: ...ation range 4 3 Mounting instructions 4 4 Electrical connection 7 5 Signaling 9 6 Commissioning 11 7 Information concerning operation 11 8 Service information 12 9 Technical data 14 10 EC Declaration of Conformity 15 Imprint Copyright 2011 SCHMIDT Technology All rights reserved Version 531227 02A Subject to modifications ...

Page 3: ...escribed in these in structions for use will forfeit any warranty and exclude any liability The unit is designed exclusively for the use described below refer to chapter 2 In particular it is not designed for direct or indirect per sonal protection SCHMIDT Technology cannot give any warranty as to its suitability for certain purpose and cannot be held liable for accidental or se quential damage in...

Page 4: ...ed rooms and is not suita ble for outdoor use 3 Mounting instructions General information on handling The flow sensor SS 20 515 is a sensitive measuring instrument This is why applying mechanical force to the sensor tip should be avoided The sensor tip can be damaged irreversibly due to mechanical loads Leave the protective cap as long as possible attached during mounting and handle the sensor wit...

Page 5: ...nsor can still be aligned accurately by hand if required Finally the holding fixture screw must be tightened with a key wrench wrench size 22 until the sensor is sufficiently secured against twisting Prior to commissioning the sensor remove the protective cap Assembly in the ceiling The angled sensor is designed for assembly below the ceiling After the sensor has been inserted into the fixture bus...

Page 6: ...rames with an existing opening with PG21 thread e g sprinkler openings in profiles Mounting Type 3 Threaded bush M25 with shank nut For installation in frames with a thickness from 21 to 40 mm especially for ceiling frames made of hollow profiles Openings with a Ø of 26 mm and a Ø of 28 5 mm are necessary Mounting Type 4 Welding bush For welding to stainless steel ceilings or walls Mounting Type 5...

Page 7: ...ply voltage UB white 2 Aout Temp Temperature output brown 3 internal green 4 internal yellow 5 internal grey 6 Aout Flow Velocity signal pink 7 GND Mass blue Shield Electromechanical shielding Shield meshwork Table 2 All signals use GND as electric reference potential The cable shield is continuously connected to the metallic housing of the plug in connector and the sensor and must be connected to...

Page 8: ...count by the customer Analog outputs The analog outputs of the sensor flow and temperature are designed as high side drivers i e the apparent ohmic resistance RL must be con nected between the respective signal output and the reference potential for the sensor outputs GND see following figures The outputs have a permanent short circuit protection against both rails of the operating voltage while t...

Page 9: ...pt as short as possible Reconnection to cables with wider cross sections near the sensor is recommended The voltage drop in the GND wire of the connecting cable during operation can substantially falsify the analog signal at the voltage output 5 Signaling The sensor SS 20 515 reproduces the respective measuring quantity linearly on the relevant analog output The representation specification depend...

Page 10: ...es approx 5 V or 12 mA be cause the typically prevailing room temperature of approx 25 C cor responds to half the measuring range Error signaling In current mode the interface outputs 2 mA In voltage mode the output switches to 0 V Exceeding the measuring range for the flow Measuring values larger than wN max are output in a linear way up to 110 of the signaling range 11 V or 21 6 mA At still high...

Page 11: ...ommissioning Before switching on the SCHMIDT Flow sensor SS 20 515 it must be checked if the sensor was installed correctly both mechanically and electrically If operation takes place according to the designated use the sensor is ready for measurement approx 10 s after switching on the supply volt age 7 Information concerning operation Ambient condition temperature The SCHMIDT Flow sensor SS 20 51...

Page 12: ...suitability of the above mentioned or other similar chemicals must be checked for every individual case due to different ambient conditions Condensing liquid on the sensor results in serious measure ment errors After being dried the sensor will work again correctly if the condensate has not caused any damage e g as a result of cor rosion Sterilizability Both uncoated and coated sensors can be ster...

Page 13: ...inations or mechanical stress Moreover every return must be accompanied by a completely filled in decontamination declaration for a form go to www schmidttechnology de Recalibration If the customer has made no other provisions we recommend repeating the calibration at a 12 month interval To this end the sensor must be sent to SCHMIDT Technology Spare parts or repair No spare parts are available si...

Page 14: ... humidity RH non condensing Operating pressure Atmospheric 700 1300 hPa Supply voltage UB 24 VDC 10 Current consumption typ 60 mA 100 mA max Analog outputs Voltage output Current output Maximum load capacitance Selectable when ordering 0 10 V for RL 10 kΩ 4 20 mA for RL 300 Ω 10 nF Electrical connection Plug male M9 7 pin Line length 15 m max Voltage output 100 m max Current output Type of protect...

Page 15: ...Instructions for use SS 20 515 Page 15 10 EC Declaration of Conformity ...

Page 16: ...nstructions for use SS 20 515 Page 16 SCHMIDT Technology GmbH Feldbergstrasse 1 78112 St Georgen Schwarzwald Phone 49 0 7724 899 0 Fax 49 0 7724 899 101 info schmidttechnology de www schmidttechnology de ...

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